Tandem sliding door operator

摘要

Door operator for opening, closing and locking at least one door panel on a transit vehicle. The door operator has at least one base portion for mounting on the vehicle and at least one fixed support member attached to the base portion. The door operator has door hangers for attachment of the door panel to the fixed support member and moveable door support members attached to the door hangers. The moveable door support members engage the fixed support member to support the door panel while permitting opening and closing motions of the panel. The operator includes at least one door drive having a base mounted portion and a hanger mounted portion engaging the base mounted portion to be moved thereby to move the panel in opening and closing directions. The operator has a lock for securing the door panel in a closed position, the lock having a lock shaft which includes at least one primary lock device for preventing motion of the base mounted door drive portion and at least one secondary lock device engaging one of the door hangers. The lock includes a lock shaft engaging mechanism which rotates the lock shaft to a locking position when the door panel is closed. The lock also has an unlocking actuator for unlocking the door panel, the unlocking actuator having a moveable portion connected to the lock shaft to rotate the lock shaft to the unlocking position.